If there is no sound from Vivitek D555 projector, you can check the following solutions for troubleshooting.
1. Check whether the projector is mute by adjusting the volume with the remote control.
2. Adjust the volume of the audio source.
3. Check the audio cable connection.
4. Test the source audio output with other speakers.
5. Check the audio or video format.
Related Posts
Vivitek D555 Projector Remote Control Doesn’t Work Troubleshooting
Vivitek D555 Lamp Problem Troubleshooting
